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No. 607,810. Patented July I9, |898. A. T. TIMEWELL.

FILLED sAcK SEWING MACHINE.

(Application led July 31, 1897.)

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No. v607,8ICI. Patented IuIy I9, |898. A. T.. TIMEWELL.

FILLED S'ACK SEWING MACHINE.

(Application led July 31, 1897.)

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No. 607,8I0. Patented .Iuly I9, |898. A. T. TIMEWELL.

FILLED' SCK SEWING MACHINE.

(Application lad July 31, 1 897.) LNo Model.) 3 Sheets-Sheet 3.

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"Ntra STATES ARTHUR T. TIMEIVELL, OF CHICAGO, ILLINOIS, ASSIGNOR ALBERT DICKINSON, OF SAME PLACE( FILLED-SACK-sl-:WING MACHINE i' SPECIFICATION forming part of Letters Patent No. eo7,s1o, dated JulyA 19, 1898:l application niet July s1, 1897. serial No. 646,608. (no modem To all whom t may concern: L

Be it known that I, ARTHUR T. TIMEWELL, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvef ment in Filled- Sacky Sewing Machines of which the following is a specification.Y Y

llIy invention relates to machines for sewing filled sacks.

Machines heretofore constructed for this purpose have usually comprised, in connection with a sewing mechanism, an opening and closing traveling sack-holder having two or more clamp-bars for holding the mouth of the filled sack closed and in position for sewing as the filled sack is conveyed past the sewing mechanism, the holder also serving, in most cases, to hold the empty sack open while it is being filled.

The object of my present invention is to provide a machine Vof a simple and durable construction. and efficient in operation by means of which filled sacks may be very rapidly and cheaply sewed as they pass continuously through the machine.

To this end my invention consists, essentially, in connection with a sewing mechan-L ism of any suitable construction, of an Vendless traveling sack-holder comprising a pair of opening and closing continuous endless` flexible clamps, preferably chains, traveling on suitable pulleys or sprocket-wheels and between which the mouth edges vof the lled sacks are fed and by which the same are clamped and held closed in position for sewing as the continuously-traveling chains carry the sacks one after another past the sewing mechanism. Suitable guides in or along which the chains travel cause their opposing or parallel portions to properly clamp the sacks between them. The pulleys at the front end of themachine around which the chains pass, or, rather, the curved portions of the chains on these pulleys, serve to feed the mouth edges of the sacksV in between the chains as soon as the front edge of the sackmouth is placed in the bite thereof, justas a sheet, for example, passes between rollers revolving together. A conveyer is or may be employed to convey the filled sacks to this endless traveling sack-holder. In cases where the .materialof which the sacks vmade is through the machine, and this same conveyer may be extended so as to serve also as the means for conveying the filled sacksto the machine and for delivering them from it after 'being sewed. The backs or meeting faces of the links of the endless chains comprising the endless traveling saok-conveyer are provided the one with a groove and the other with a rib or. tongue fitting in the groove to increase their clamping or holding action upon the mouth edges of the sacks. The filled sacks should be delivered to the machine one after another and continuously passed through the machine with intervals of only a few inches, preferably five or six, between the successive sacks, and the chain of stitching or thread uniting the successive sacks is out by a suitable knife or cutter, which is or may be ope erated by each sack as it passes by a movable `lever projecting in the path of the sack.

In the accompanying drawings, forming a part of this specification, Figure l is a side elevation of a machine embodying my invention. Fig, 2 is a plan view. Fig. 3 isa par` tial vertical section on line 3 3 of Fig. 2. Fig. 4t is a detail plan view of a portion of the chain. Fig. 5 is a section on the line 5 5 of Fig. 2, and Fig. 6 is a detail of the knife or n cutter.

In the dra-wings like letters of reference indicate like parts in all the figures.

In said drawings, A represents the frame of the machine. The bedplate A', upon which the sewing mechanism B is mounted,

`is provided with a longitudinal slot a for the IOO so as to cause them to properly clamp and hold the mouth edges of the filled sacks between them. The links of the two chains d (Z of the endless traveling sack-conveyer are provided at their backs or meeting faces the one with a groove d2 and the other with an interlitting tongue or rib d3 to increase their clamping action upon the mouths of the sacks. The two chains of the endless traveling sackholder are propelled orvdriven continuously by power applied to the shaft d4 of one of the pulleys or sprockets d', preferably by means of a gear d5 on said shaft meshing with a worm d6 on the shaft (Z7, which is provided with a bevel-gear d8, that meshes with a gear B on the driving-pulley B2 of the sewing mechanism, the two chains CZ d being also preferably geared together by the interm eshing gears d d10, the former being on the shaft d4 of the sprocket-wheel of one chain and the latter on the shaft du of the sprocket-wheel of the other chain. The guides C G for the chains d d should be shaped to fit the inner faces of said chains, so as to properly guide or hold them in position, especially in cases where the Weight of the filled sack is designed to be suspended or supported from and by the endless traveling sack-holder, as may be readily done in operating upon small sackssuch, for example, as ten or twenty-five pound sacks-or upon larger sacks composed of strong fabric, such as are commonly used for bagging grain.

Bridges A2 A2, spanning the slot a, unite the two portions of the bed-plate A of the frame on each side of said slot.

F is a carrier consisting, preferably, of an endless traveling platform running upon rollers or sprockets F, upon which the filled sacks X are placed and by which they are conveyed to the machine in position to have their mouth edges fr inserted between the front l pulleys d d and sack-holder chains (l d.

This same conveyer F is also preferably eX- tended through the machine under the straight or parallel portions of the sack-holding chains d d, so that in cases where necessary the weight of the filled sacks may be in whole or in part supported by this conveyer while the sacks are being conveyed through the machine. By this means the endless traveling sack-holder D is or may be relieved from the weight of the filled sack.r The conveyer F is also preferably further extended at the rear of the machine, so that it may also serve as the means for conveying or delivering the filled and sewed sacks out of or from the machine.

To readily adapt the same machine to operate upon filled sacks of different sizes, heights, or lengths, the bed-plate A', upon which the sewing machanism B and endless traveling sack-holder D are mounted, is provided with telescopic or extension legs or supports A4 A5, so that the height of the bed-plate A' above the conveyer F may be adjusted as required. Set-screws AG serve to fix the movable legs A4 in any position desired in respect to the stationary legs A5.

The sewing mechanism B may be of any suitable construction known to those skilled in the art and requires no detailed description, as my invention does not consist in. nor is it dependent upon any particular construction of sewing mechanism. The particular form of sewing mechanism which I have for convenience illustrated in the drawings comprises a frame or arm B3, attached to the bedplate A' of the frame at one side of the slot uand overhanging said slot and the guides C C and parallel portions of the sack-holder chains d CZ, and a needle Zi, looper l1', and presser-foot b2, and suitable gearing or mechanism for communicating motion to the needle and looper.

From the continuously-rotating drivin pulley B2 motion is communicated to the sewing mechanism through a friction-clutch B4`B5.

Gr is the knife or. cutter by which the chain of stitching or thread a" uniting the sewed sacks is cut as each sack passes. The cutter is mounted upon and operated bya lever G',

the free end of which projects norm ally in the path of the sack and which is caused to move in and carry the knife G against the chain of stitching fr the moment the sackpasses by a spring G2. Opposing cutters or pins g g, projecting downwardly from the table A', facilitate the action of the knife G in cutting the thread or chain of stitching.

One of the guides C C is adj ustably secured to the bed-plate A', so that it may be moved or adjusted to or from its fellow for the purpose of regulating the gripping or clamping action of the opposing sack-holder chains upon the sacks. Itis so adjustably fixed in position by adjusting screws C in connection with bolts C2, which latter pass through the guide C and the table A, slots being provided in the one or the other to permit of the adjustment.

While I have called the two opposing endless parts of the endless traveling sack-holder chains7 and have illustrated them in the drawings as being composed of links, I wish it to be understood that by use of the word chains I mean to include any form of endless flexible belts or connections suitable for use in'my combination.

The conveyer F may be driven by any suitable mechanism. It should, however, be driven at the same speed as that of the traveling-sack-holder chains d el. This may preferably be done by connecting it directlywith the shaft d, through which motion is imparted to the chains CZ d. It may be so connected by any suitable connecting mechanism or gearing-such, for example, as that indicated in the drawings.

II is a belt-shifter for starting and stopping the machine by shifting the driving-belt from the loose pulley E', which is not connected to the machine, to the pulley B2, which is connected to the machine.

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II' is a cl uteh-rod for operating the frictionclutch B4 B5, by which the driving-shaft of the' sewing mechanism is connected to the driving-pulley B2. By means of these two clutch-rods the sewing mechanism may be started or stopped independently of the sackholder chains d cl.

I claiml. In a machine for sewing filled sacks, the combination with a sewing mechanism of an endless traveling sack-holder comprising a pair of opening and closing endless flexible clamps for receiving and feeding the mouth edges of the filled sacks and holding the same closed in position for sewing, and conveying the same past the sewing mechanism, substantially as specified.

2. A lled-sack-sewing machine, compris' ing in combination a sewing mechanism and an endless traveling sack-holder comprising a pair of opening and closing continuous endless flexible clamps, substantially as specilied.

3. A filled-sack-sewing machine, comprising in combination a sewing mechanism and an endless traveling sack-holder consisting of a pair of endless chains having opposing parallel portions between and by which the mouth edges of the sack are received, fed, clamped and held, substantially as specified.

4. In a filled-sack-sewing machine, the combination with a sewing mechanism, of a pair of endless chains having opposing parallel portions between and by which the sacks are received, fed and clamped, the backs or meeting faces of said chains having the one a groove and the other an interfitting tongue to increase the clamping or holding action of the chains upon the sacks, substantially as specified.

5. In a lilled-sack-sewing machine, the combination with a sewing mechanism, of an endless traveling sack-holder comprising a pair of opening and closing continuous endless flexible clamps, and a conveyer for delivering the filled sacks tothe endless traveling sackholder, substantially as specified.

6. In afilled-sack-sewing machine, the combination with a sewing mechanism of an endless traveling sack-holdercomprising a pair of opening and closing continuous endless flexible clamps and a conveyer for supporting the weight of the lled sacks as they are carlried through the machine past the sewing mechanism, substantially as speciiied.

7 In a lled-sack-sewing machine, an endless traveling opening and closing continuous sack-holder consisting of a pair of endless chains having parallel opposin g portions traveling together and between which the sacks are clamped, substantially as specified.

S. In a filled-sack-sewing machine, an endless traveling opening and closing continuous sack-holder consisting of a pair of endless chains having parallel opposing portions traveling together and between which the sacks are clamped, and guides for the parallel portions of said chains, substantially as specified.

9. In a filled-sack-sewing machine, the combination with a bed-plate having a longitudinal slot a, of a sewing mechanism, and a pair of endless traveling sack-holder chains, guides C C, and pulleys or sprocketwheels upon which said endless chains travel, whereby the filled sacks are automatically received, fed and clamped between and delivered from said chains, substantially as specified.

10. In'a filled-sack-sewing machine, the combination with the sewing mechanism, of an endless traveling sack-holder comprising a pair of opening` and closing continuous endless fleXible clamps, and a knife or cutter for severing the chain of stitching or thread uniting the sewed sacks as they pass successively through the machine, substantially as specified. y

11. In a Iilled-sack-sewing machine, the combination with the sewing mechanism, of an endless traveling sack-holder, a knife or cutter for severing the chain of stitching or thread uniting the sewed sacks as they pass successively through the machine, and an arm or lever projecting in the path of the -filled sack for operating said knife or cutter, substantially as specified.

l2. The combination with a sewing mechanism, of a` pair of endless traveling sackholder chains adapted to receive and feed the mouth edges of the sack between them, and a conveyer for delivering the sewed sacks from the machine, substantially as specified.

13. A iilled-sack-sewing machine, comprising in combination a sewing mechanism and an endless traveling sack-holder consisting of a pair of endless chains having opposing parallel portions between and by which the mouth edges of the sack are` fed, clamped and held, and guides for the parallel portions of thread uniting the sewed sacks as they pass successively through the machine, and an arm or lever projecting in the path of the filled sack for operating said knife or cutter by engagement with the sewed sack as it passes, substantially as specified.

ARTHUR T. TIMEVVELL.

Witnesses:

I'I'. M. MUNDAY, Il. E. CURTIS.

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